Injection engine



Jan. 23, 1934.', F. LANG 1,944,605

INJECTION ENGINE zfiginal Filed Dec. 11930 y' pk/9*,

Patented Jan. 23, 19E-ii UNITED STATES PATENT oFFlcE 1,944,605 wineries ENGINE Franz Lang, Munich, Germany, assigner to L anova Aktiengesellschaft, Vaduz, Liechtenstein originel application December Liceo, semi No. '499,223, andin Germany October 3),- 1930.. Divided and this application June 19, '1933.

Serial N0. 676,428

Claims. (Ci. 123,-j-32) My invention relates to a fuel injection internal combustion engine of .the type :which embodies l an air chamber inr'which fluid is compressed dur- 1930, for Fuel injection vinternal combustion engines.'v

The instant invention contemplates an improved combustion chamber shape and corresponding locations of the fuel nozzle and air chamber,.all to the end of obtaining improved organized turbulence, eective mixing of the charge,- better combustion of the charge, and keeping the piston and cylinder clear of combustion residue. 1 Y,

My invention is illustrated in the accompany ing drawing, in which l Figure 1 vis a vertical Aaxial sectionall view of' those portions of the engine with which my invention is'concerned; l

Figure. 2 is a horizontal sectional view taken on the plane of the line C-D of Figure 1,*looking downwardly; the line A-B of Figure 2 indicates the plane on:which the section, Figure 1, is taken;

Figure 3 is a vertical axial sectional view taken on the plane'of line E-F of Figure 1; and

Figures 4 and 5 correspond to Figure 2 and show the uid ni'ovements during the compression period and after ignition, respectively.

'I'he ,drawing shows. the cylinder, the piston v which'reciprocates in the cylinder, the fuel nozzle a, the air chamber b, the combustion chamber-c, formed in the headof the cylinder, and the valves d and e. for the admission of air and the exit of the productsl of comhistion. 40 It will be noted that thecombustion chamber c is heart-shaped inA plan, of considerably less area than the horizontal section ofthe cylinder, thatv the nozzle 'leads into the combustion chamber at the junction of the lobes thereof, and thatth'e air chamber is located with its orifice leading into the combustion chamber at the apex thereof. v Thus, the fuel nozzle and the` air chamber are c'o-.axial and lead toward each other on v the diametrcal line of the cylinder, 'and spacedapart a distance less than the diameter ofthe cylinder. The air chamber b'is formed in va plug, which is inserted 'in an opening in the cylinder casting, as shown in the' drawing. s Upon the compression, stroke lof the piston, uid from above the piston is compressed in the chamber b, and upon 'the working stroke of the piston this huid issues from the chamberathigh ve-.

locity, the stream of duid being directedagainst the-fv opposite combustion chamber ,-wall, at the junction of the 1obes,fwhere it "splits as indicated 50',

in Figure 5, the v'further 'movement of the fluid taking place in two opposite directions circum- .ferentially along the walls voi' the respective lobes of the combustion chamber.

Suitable mechanism is of course v#provided to .65 cause the nozzle a to inject fuel into the combustion chamber at the proper time in the cycle, beginning with the `iinal compression, and to actuate the valves at the proper times.

I claim:-

, 1. In an injection engine, a cylinder and a piston operating therein, a main combustion chamber of approximately heart-shape in plan overlying and opening into the cylinder area, said chamber comprising a. constriction and lobes 'at 7'5 opposite sides thereof, storage means comprising an'ar storage chamber opening into the combustion chamber at one side thereof and through a passage disposed substantially normal to the A cylinder axis, and fuel injecting means at the 30 opposite. side of the combustion chamber and disposed to inject fuel thereinto toward the opening ofthe storage chamber'and substantially normal to the cylinderA axis, onegof lsaid means being disposed at said constriction and between the g5 lobes of the combustion chamber.-

2. In an injection engine, a cylinder and a, plston operating therein, a combustion vchamber overlying and openinginto the cylinder area, said chamber comprising in plana constriction and l lobes at opposite sides thereof, an air storage chamber opening into the combustion chamber at one side Aof the constriction thereof and through a. passage disposedv substantially normal to the cylinder axis, and fuel injecting means disposed 95 to inject fuel into the combustion chamber at the opposite side of said constriction and toward the opening ofthe storage chamber and substantially normal to the cylinder axis. t

f FRANZ LANG. 

